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【多选题】
碱裂解法提取质粒时，裂解大肠杆菌所需要的成分是 。A.
0.4M NaOH
B.
0.4M Na2CO3
C.
0.4M NaHCO3
D.
1.0% SDS
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【单选题】On March 1 the price of a commodity is $1,000 and the December futures price is $1,015. On November 1 the price is $980 and the December futures price is $981. A producer of the commodity entered into...
A.
1016
B.
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C.
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D.
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【简答题】A．written B．graded C．collected D．signed
【简答题】The memorandum of understanding were signed in 47______________
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